select * from table where id < 10 order by time desc limit 1 update table set time = ‘12345678899‘ insert table (a,b,c) values(1,2,3),(4,5,6) delete from table where id < 10
db.table.find({id:{$gt:10}}).limit(1) db.table.update({time:"12345678899"}) db.table.remove({id{$gt:10}})
原文：http://www.cnblogs.com/zzt-lovelinlin/p/4688494.html